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Manley Performance

Manley Performance

Manley NexTek Valve Spring and Retainer Kits 261424L Springs/ Titanium Retainers, Nex Tek, 1.640 in. Outside Diameter, 647 lbs./in. Rate, Kit

SKU: MAN261424L

Valve Springs
Manley NexTek Valve Spring and Retainer Kits 261424L Springs/ Titanium Retainers, Nex Tek, 1.640 in. Outside Diameter, 647 lbs./in. Rate, Kit
Manley Performance

Manley Performance

Manley NexTek Valve Spring and Retainer Kits 261424L Springs/ Titanium Retainers, Nex Tek, 1.640 in. Outside Diameter, 647 lbs./in. Rate, Kit

SKU: MAN261424L

Valve Springs
A$1,288.61
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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Description

Manley NexTek valve spring and retainer kits are designed and manufactured for optimum consistency, run after run, lap after lap. They are manufactured from super clean high-tensile chrome silicon steel that has been shot peened to MIL specs for maximum fatigue life. Proven to have less load loss than many other springs, they exhibit superior fatigue life and enhance valvetrain stability--everything that counts in winning races!

Part Type

Valve Springs

Data: v4.2 - Upd: 2026-10-14 10:11:40

Specifications

Product Attributes - Brand
Manley
Product Attributes - Manufacturer's Part Number
261424L
Product Attributes - Part Type
Valve Springs
Product Attributes - Product Line
Manley NexTek Valve Spring and Retainer Kits
Product Attributes - UPC
807298023915
Product Attributes - Valve Spring Style
Standard
Product Attributes - Number of Springs Per Valve
Dual
Product Attributes - Maximum Valve Lift (in.)
0.880 in.
Product Attributes - Retainers Included
Yes
Product Attributes - Retainer Material
Titanium
Product Attributes - Outside Diameter of Outer Spring (in.)
1.640 in.
Product Attributes - Coil Bind Height (in.)
1.070 in.
Product Attributes - Damper Spring Included
No
Product Attributes - Spring Rate (lbs./in.)
647 lbs./in.
Product Attributes - Inside Diameter of Outer Spring (in.)
1.185 in.
Product Attributes - Inside Diameter of Inner Spring (in.)
0.860 in.
Product Attributes - Locks Included
No
Product Attributes - Lock Style
10 degree
Product Attributes - Valve Stem Seals Included
No
Product Attributes - Valve Springs Coated
No
Product Attributes - Valve Stem Diameter (in.)
0.375 in.
Product Attributes - Valve Stem Diameter (mm)
9.53mm
Product Attributes - Remanufactured
No
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Notes
Includes special lightweight retainers. Retainers also fit with 11/32 in. valve stems.

Reference Information

Brand Name/s Manley Performance
StreetFX SKU man261424L
SFX Item ID 4927817
Supplier Item Code 4927817
Manufacturer SKU 261424L
Manufacturer UPC 807298023915

Compatibility

Application Data
  • MakeCHEVROLET
    Beginning Year1965
    Ending Year1970
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size6.5L/396
    Installed Height (in.)2.000 in.
    Seat Pressure at Installed Height (lbs.)250 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)800 lbs.
  • MakeCHEVROLET
    Beginning Year1966
    Ending Year1969
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.0L/427
    Installed Height (in.)2.000 in.
    Seat Pressure at Installed Height (lbs.)250 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)800 lbs.
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1972
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size6.6L/402
    Installed Height (in.)2.000 in.
    Seat Pressure at Installed Height (lbs.)250 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)800 lbs.
  • MakeCHEVROLET
    Beginning Year1970
    Ending Year1990
    Engine TypeV8
    Engine FamilyChevy big block Mark IV
    Engine Size7.4L/454
    Installed Height (in.)2.000 in.
    Seat Pressure at Installed Height (lbs.)250 lbs.
    Open Height (in.)(application)1.150
    Open Pressure (lbs.)800 lbs.

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